(0 21 4)(1 12 2)(3 8 5 13 7)(6 11 9)(10 16 14)(15 19 17)(18 22 20)
ALLOWS (11/8)-SEQUENCE
1: (1 6 11)

(0 21 4)(1 9 6 12 2)(3 8 5 13 7)(10 16 14)(11)(15 19 17)(18 22 20)
2: (3 13 7)

(0 21 4)(1 9 6 12 2)(3)(5 13 8)(7)(10 16 14)(11)(15 19 17)(18 22 20)
3: (2 6 12)

(0 21 4)(1 9 6)(2)(3)(5 13 8)(7)(10 16 14)(11)(12)(15 19 17)(18 22 20)
4: (5 13 8)

(0 21 4)(1 9 6)(2)(3)(5)(7)(8)(10 16 14)(11)(12)(13)(15 19 17)(18 22 20)